diff --git a/_config/cms.yml b/_config/cms.yml
index 11989d1..032fa99 100644
--- a/_config/cms.yml
+++ b/_config/cms.yml
@@ -3,4 +3,4 @@ Name: seo cms config
 ---
 SilverStripe\Admin\LeftAndMain:
   extra_requirements_css:
-    - resources/vendor/cyber-duck/silverstripe-seo/assets/css/seo.css
+    - _resources/vendor/cyber-duck/silverstripe-seo/assets/css/seo.css